Hella Marine 964295101 LED Tail Lamp, Red 4-Inch Oval

The Hella Marine 964295101 is a compact LED tail lamp for the back of a boat trailer, and it does exactly what the back of a trailer needs. Red lens, clear LED bulb, and a reflex reflector all built into one sealed 4 x 1.8 inch oval body. It's part of the Hella Marine lineup, the 'fit and forget' gear that goes on once and keeps working season after season. If you've ever pulled a trailer up a wet ramp at dusk and wondered whether your tail lights were still lit, this is the kind of lamp that quietly takes that worry off the list.

Why LED matters here comes down to two things. Vibration and water. A trailer bounces. Every pothole, every rutted launch, every mile of washboard road shakes an incandescent filament until it eventually gives up. An LED has no filament to break, so it keeps burning long after a bulb would've quit. And because the whole unit is sealed, there's no socket to corrode and no glass to fog up when the lamp gets dunked backing down the ramp. That's the part boaters care about. Trailer lights live half their life underwater.

The red lens over a clear LED gives you that rear tail glow, and the integrated reflex reflector adds a passive reflective face so the trailer stays visible even when the lights are off and someone's headlights sweep across it in a dark parking lot. One part, two jobs. The 4 x 1.8 inch oval footprint is a common trailer size, so it drops into the flat spots on most fenders, cross members, and light boards without a lot of fuss.

A few install notes from folks who've done this a hundred times. Cut your opening to match the 4 x 1.8 inch oval as closely as you can. On a fiberglass transom or a light board, an oversize hole is the number one reason these leak later, so measure twice and take your time with the cutout. If you're running the wire through the mounting surface, seal that entry point. A wrap of butyl tape behind the lamp plus a bit of heat-shrink on the connection keeps water out of the splice, which is where most trailer wiring fails first.

Mounting hardware takes a little thought too. Trailer vibration works fasteners loose over time, so nylon-insert lock nuts or rivets hold better than plain screws and nuts. If your trailer already has a standard 4 inch oval grommet, this lamp is sized to work with that style of mount, though it's worth test-fitting the reflex lip before you commit since not every rubber gasket clears it cleanly.

This lamp pairs cleanly with the rest of the Hella Marine oval series, so if you're rewiring the whole back end you can match it with white backup lamps or amber side markers from the same family and keep a consistent look down both sides of the trailer. Building out a full lighting set from one series also keeps your spares simple. One style of lamp, one style of grommet, done.

Who's this for? Anybody rebuilding or upgrading trailer lighting on a boat trailer, utility trailer, or small marine hauler who wants a sealed LED that'll outlast the old incandescent setup. It's a single lamp, so if you're doing both sides you'll want two, and if you need stop and turn functions you'll want to plan your full lighting layout around what each lamp on your trailer is doing. For a clean, low-maintenance rear tail and reflector in one, this Hella Marine oval is an easy call.

One honest note on expectations. A red lens over a clear LED reads a touch softer at night than a lamp built with dedicated red diodes, especially viewed from a sharp angle. For a trailer tail and reflector combo that's exactly what you want, plenty of presence without glare. Just know what you're buying. It's a dependable, sealed, corrosion-resistant rear lamp from a brand that's been lighting up boats and trailers for decades.